Self regulating fluid bearing high pressure rotary nozzle

ABSTRACT

A high pressure rotary nozzle having a rotating shaft operating within a fixed housing wherein the axial force which acts upon the shaft due to the liquid pressure at the shaft inlet is balanced by allowing passage of a small amount of the pressurized liquid to be bled to an area or chamber between the outside of the opposite end of the shaft and the inside of the housing where the liquid pressure can act axially in an opposing direction upon the shaft to balance the axial inlet force. The balance of axial forces is self-regulating by controlling escape of the liquid through a tapered or frusto-conical region between the shaft and housing. This further provides a liquid bearing between the two surfaces and allows use of interchangeable rotating jet heads having jet orifices which can be oriented in virtually any desirable configuration including axially forward of the nozzle.

This application is also related to U.S. Design application Ser. No. 29/355,240, filed Jun. 15, 2010, now U.S. Design Pat. No. D617,870.

FIG. 1 is a perspective view of a self regulating fluid bearing high pressure rotary nozzle showing my new design.

FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. 1.

FIG. 3 is a right side elevational view of the nozzle shown in FIGS. 1 and 2.

FIG. 4 is a left side elevational view of the nozzle shown in FIGS. 1 and 2.

FIG. 5 is an elevational view of a front end of the nozzle shown in FIGS. 1 and 2.

FIG. 6 is an elevational view of the rear end of the nozzle shown in FIGS. 1 and 2

FIG. 7 is a bottom plan view of the nozzle; and,

FIG. 8 is a top plan view of the nozzle.

The broken line showing in FIGS. 1-4 and 7-8 are included for the purpose of illustrating and forms no part of the claimed design. 

The ornamental design for a self regulating fluid bearing high pressure rotary nozzle, as shown and described. 